Back up your data
If you don't back up data, you will loose it sometime.
Maybe not until next week.
Maybe not until next year.
And if you don't back up your stuff, you WILL suffer . . .
These 5 applications, Dropbox, Box, Google Drive, Evernote and One Drive, are things you can download on your laptop, phone and/or iPad/tablet. They will sync between devices. You can send documents/images/files to the applications via email. They are all free.